DEVICE FOR REMOVING A CORE FROM HARVESTED HEADING PLANTS
The invention relates to a device for removing a core from harvested heading plants comprising a stalk and, on said stalk, a head, such as in particular broccoli and cauliflower. The device is provided with positioning means for positioning the plant, which positioning means comprise clamping means for clamping the plant stalk therebetween, and with separating means. The separating means comprise at least one separating element which is movable between a first position and a second position. In the first position the separating element extends on one side of the stalk and in the second position the separating element extends on the other side of the stalk such that after moving the separating element between the first position and the second position, a separation between the stalk with the core and the remaining part of the plant during movement of the separating element from the first position to the second position.
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The invention relates to a device for removing a core from harvested heading plants comprising a stalk and, on said stalk, a head, such as in particular broccoli and cauliflower.
Such a device is known; in said device, the heading plants, such as broccoli, for example, are positioned on a conveyor belt comprising dishes; in a first operation, the plant stalk is removed, and in a second operation the core is removed or divided, so that only the florets, i.e. the closed buds in the case of broccoli and the springing buds in the case of cauliflower, remain. Although virtually the entire core can be eaten, it has little economic value, since consumers mainly confine themselves to using the florets of the broccoli and the cauliflower in the preparation of food.
A drawback of the known devices is that said devices, on account of the various operations that are to be carried out, do not separate the economically valuable parts of heading plants, such as cauliflower and broccoli, in an efficient manner.
SUMMARYAccordingly it is an object of the present invention to provide a more efficient device for removing a core from harvested heading plants.
This object is accomplished with the device according to the present invention in that the device is provided with positioning means for positioning the plant, which positioning means comprise clamping means for clamping the plant stalk therebetween, and with separating means, which separating means comprise at least one separating element which is movable between a first position and a second position, in which first position the separating element extends on one side of the stalk and in which second position of the separating element extends on the other side of the stalk, for effecting a separation between the stalk with the core and the remaining part of the plant during movement of the separating element from the first position to the second position.
The advantage of the device according to the present invention is that the commercially most valuable parts (the florets) of the heading plants, such as the closed buds in the case of broccoli, can be separated from the commercially less valuable parts of the heading plants, viz. the core and the stalk, by means of a single cutting movement of the separating element. This process being carried out in the device can take place in the field in a continuous mechanised process, in which the heading plants are harvested and subsequently their core is removed. Using the device according to the invention, the harvested plants are prepared for packaging in one step, for example for being sold in shops, or for further processing, for example the preparation of food products in which only the florets of the heading plants are needed, for example in the steam preparation of meals.
A special embodiment of the device according to the invention is characterised in that the separating element is arcuate in shape.
The separating element is arcuate in shape, preferably U-shaped, so as to conform to the shape of the core of heading plants, so that the florets can be cut from the core and be separated from the core with the stalk attached to the core in a single cutting movement.
Another embodiment of the device according to the invention is characterised in that the separating element is pivotable about an axis.
This is a relatively simple manner of having the arcuate separating element describe a relatively precise semicircular path.
Another embodiment of the device according to the present invention is characterised in that the separating means are provided with detection means and with an adjusting mechanism for adjusting the separating element relative to the plant to be separated in dependence on the position, the shape and the dimension of the plant detected by the detection means.
The detection means comprise detection means which are known per se, such as a camera and/or infrared measuring instruments, for example, by means of which the position, the shape and the dimension of the plant to be separated are determined. Depending on the result determined by the detection means, the separating element is positioned in any desired orientation relative to the plant present between the clamping means by means of the adjusting mechanism. Once positioned, the cutting movement between the first and the second position, or vice versa, is carried out, whereupon the adjusting mechanism will move the separating element with respect to the next clamped-down plant.
It is possible to provide a device with several separating elements, so that the productivity of the device can be increased.
Another embodiment of the device according to the invention is characterised in that the positioning means additionally comprise a gripper for gripping the plant stalk downstream of the clamping means, after which the separating element can be moved between a first position and a second position.
Using the gripper, the plant coming from the clamping means can be reliably grasped, so that the plant can be cut by means of the separating element while being firmly fixed in place and being optimally positioned. The gripper is preferably provided with two pairs of gripping arms disposed one above the other for gripping the stalk of each plant at two spaced-apart positions. In this way the plant is firmly held and protected against tilting, for example while being cut.
The invention further relates to a method for removing a core from harvested heading plants, using a device as described in the foregoing.
Finally, the invention relates to a movable unit. Such a unit is for example provided with wheels and with coupling means, via which the unit can be coupled to a tractor or the like. By moving the unit across the land by means of the tractor, it is possible to process the plants by means of the device according to the present invention immediately after they have been harvested.
The invention will now be explained in more detail on the basis of an embodiment shown in the appended drawings, in which:
Like parts are indicated by the same numerals in the figures.
In
The device 1 is provided with positioning means 2, 3 for positioning the plant 5. The positioning means 2, 3 comprise first clamping means in the form of clamping belts 7, 9 for clamping the stalk of the plant 5 therebetween. Using the clamping belts 7, 9, the plants 5 are transported from a starting position 11 of the clamping belts 7, 9 in the direction indicated by the arrow P1 to a separating position 13. Such clamping belts 7, 9 are known per se and will not be discussed in detail therein, therefore. The positioning means 2, 3 further comprise a second clamping element in the form of a gripper 3 disposed near the separating position 13, which functions to grip the plants being supplied by the clamping belts 7, 9.
The device 1 is further provided with separating means comprising a cutting device 15 disposed near the separating position 13, which cutting device comprises an arcuate or sickle-shaped separating element 16.
The separating element 16 is a cutting blade having one cutting edge with an upper surface and the lower surface (not shown), and in order to achieve a correct section it is important that the upper surface is shorter, seen in the longitudinal direction of the cutting blade, than the lower surface, so that the cutting blade comprises a triangular tip at the cutting edge, the virtual rectangle of which is formed by the lower surface of the cutting blade and a virtual line perpendicular thereto.
The separating element 16 is attached, via a rotary rod 17, to a motor unit 19 by means of which the sickle-shaped separating element can be pivoted about a pivot axis in the direction indicated by the arrow P2 (
The separating means further comprise detection means 21, 23 as known per se, by means of which the position, the shape as well as the dimension of the plant 5 being transported in the direction indicated by the arrow P1 by means of the clamping belts 7, 9 can be determined. This information regarding the plants to be separated are transmitted, for example via a wireless connection, from the detection means 21, 23 to a processor (not shown) provided in the adjusting mechanism 20, under the control of which the adjusting mechanism 20 moves the separating element 16 with respect to the plant 5 to be separated to a correct position in dependence on the position, the shape as well the dimension of the plant 5 detected by the detection means 21, 23.
The gripper 3 grips the stalk of the plant 5 downstream of the clamping belts 7, 9, using two pairs (only one pair of which is shown in the figures) of gripping arms 31, 33 disposed one above the other for gripping the stalk of each plant 5 at two spaced-apart positions, so that the plant 5 is firmly and reliably grasped and positioned at the separating position 13. In total four gripping arms are provided, although only two gripping arms 31, 33 are shown in the figures. Each gripping arm 31, 33 can be pivoted about pivot pins 37, 39 by means of a pneumatic or hydraulic cylinder construction 35, from a position of the gripping arms 31, 33 as shown in
Once the plant 5 has been gripped at the separating position 13 by means of the gripper 5 and the plant 5 has been moved to within the U-shape of the separating element, which is in its first position (shown in
The device 1 is preferably disposed in a mobile unit (not shown). Such a unit is for example provided with wheels and with coupling means, by means of which the unit can be coupled to a tractor or the like. It is possible to process the plants directly after harvesting, using the device 1 according to the invention, by moving the unit across the land by means of the tractor.
Alternatively, the device 1 comprises only the first clamping means in the form of clamping belts 7, 9, in which case the cutting device 15 will be positioned along the clamping belts 7, 9, between the starting position and the separating position 15 shown in the figures. In such a situation, the separating position 15 will no longer be disposed at the position shown in
It will be appreciated that various of the above-disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Also that various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
Claims
1. A device for removing a core from harvested heading plants comprising a stalk and, on said stalk, a head, the device comprising:
- positioning means for positioning the plant, which positioning means comprising clamping means for clamping the plant stalk therebetween, and
- separating means, which separating means comprising at least one separating element which is movable between a first position and a second position, in the first position the separating element extends on one side of the stalk and in the second position the separating element extends on the other side of the stalk, for effecting a separation between the stalk with the core and the remaining part of the plant during movement of the separating element from the first position to the second position.
2. A device according to claim 1, wherein the separating element is arcuate in shape.
3. A device according to claim 2, wherein the separating element is pivotable about an axis.
4. A device according to claim 3, wherein the separating means are provided with detection means and an adjusting mechanism for adjusting the separating element relative to the plant to be separated in dependence on the position, the shape and the dimension of the plant detected by the detection means.
5. A device according to claim 4, wherein the positioning means additionally comprising a gripper for gripping the plant stalk downstream of the clamping means, after which the separating element can be moved between the first position and the second position.
6. A device according to claim 5, wherein the gripper is provided with two pairs of gripping arms disposed one above the other for gripping the stalk of each plant at two spaced-apart positions.
7-8. (canceled)
9. A device according to claim 1, wherein the separating element is pivotable about an axis.
10. A device according to claim 1, wherein the separating means are provided with detection means and an adjusting mechanism for adjusting the separating element relative to the plant to be separated in dependence on the position, the shape and the dimension of the plant detected by the detection means.
11. A device according to claim 1, wherein the positioning means additionally comprising a gripper for gripping the plant stalk downstream of the clamping means, after which the separating element can be moved between the first position and the second position.
12. A method for removing a core from harvested heading plants, using the device according to claim 1.
13. A movable unit comprising a device according to claim 1.
Type: Application
Filed: Oct 14, 2010
Publication Date: Apr 21, 2011
Applicant: PLOEGER AGRO B.V. (Oud-Gastel)
Inventor: Cornelius Johannes Maria Van Beek (Dongen)
Application Number: 12/904,504
International Classification: A23N 15/00 (20060101); A23L 1/212 (20060101); A23P 1/00 (20060101);